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  • ereuter's Avatar
    11-01-2019, 01:26 PM
    ereuter replied to a thread AFSK demodulation in Audio Projects
    I found this the other day, and rewrote it in cpp for my frequencies to try it out. It does seem to work. Bell 202 is more similar to my use that RTTY. ...
    3 replies | 168 view(s)
  • ereuter's Avatar
    11-01-2019, 12:54 PM
    ereuter replied to a thread AFSK demodulation in Audio Projects
    Hi DD4WH- Thanks for those leads. I didn't find any of those in my hours of googling. This is for a railroad telemetry system. The reason for the 1200/1800 Hz frequencies is that it produces a continuous phase...
    3 replies | 168 view(s)
  • ereuter's Avatar
    11-01-2019, 04:00 AM
    I'm interested in using a Teensy to do AFSK demodulation. I have mark and space frequencies of 1200 and 1800 Hz. I did find some very old references here to APRS receivers, which use a similar encoding, but nothing...
    3 replies | 168 view(s)
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